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QZSSQZSSThe Japanese QuasiThe Japanese Quasi‐‐Zenith Satellite SystemZenith Satellite System

Program Updates and Current statusProgram Updates and Current status

Fifth International Committee on GNSSFifth International Committee on GNSS

Torino, ItalyTorino, Italy

October 18, 2010October 18, 2010

2010/10/18 5th International Committee on GNSS：Turin, Italy 1

ContentsContentsQZSS ServiceQZSS Service

QZSS System DescriptionQZSS System Description

Develop, Launch and the Next StepDevelop, Launch and the Next Step

OrganizationOrganization

Service Provided and Provision Policies Service Provided and Provision Policies

InterInter‐‐GNSSGNSS

MultiMulti‐‐GNSSGNSS

SummarySummary


QZSS outlineQZSS outline

QuasiQuasi‐‐Zenith Satellite SystemZenith Satellite SystemCoverageCoverage: East Asia and Oceania region: East Asia and Oceania region

Six SignalsSix Signals::L1C/A, L1C, L2C and L5L1C/A, L1C, L2C and L5

can provide seamless PNT services by combining usage with GPS.can provide seamless PNT services by combining usage with GPS.

Increasing coverage and availability of PNT services even in Increasing coverage and availability of PNT services even in downtown and mountainous areas.downtown and mountainous areas.

L1L1‐‐SAIF on 1575.42 MHz SAIF on 1575.42 MHz

LEX on 1278.75MHz LEX on 1278.75MHz can enhance GPS performance by transmitting error correction can enhance GPS performance by transmitting error correction and integrity information.and integrity information.

Accelerate:Accelerate: the modernization of GPS in Asia the modernization of GPS in Asia Oceania region.Oceania region.

Platform:Platform: for Multifor Multi‐‐GNSS augmentation.GNSS augmentation.

First satelliteFirst satellite: launched in September 2010. : launched in September 2010.

PlanPlan: the 2nd and 3rd satellite will be approved : the 2nd and 3rd satellite will be approved after assessment of the technical and application after assessment of the technical and application demonstration result.demonstration result.

QZSS ServiceQZSS Service


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Ground Track of a QZSS SatelliteAt least one QZSS satellite can be observed more than specified elevation angle any time. For instance, users in orange colored area can receive at least one QZSS satellite with 70 degrees or more.

QZSS Service CoverageQZSS Service Coverage

the Elevationthe Elevation


QZSS Service CoverageQZSS Service Coverage

the Number of Satellitesthe Number of Satellites

0 1 2 3

Southeast Asia can observe 3 QZSS satellites almost of time.

Most East Asia and Oceania countries can observe more than 2 QZSS satellites every time


FrequencyFrequency NotesNotes

L1L1‐‐C/AC/A1575.42MHz1575.42MHz Complete compatibility and Complete compatibility and

interoperability with existing and future interoperability with existing and future modernized GPS signalsmodernized GPS signals

Differential Correction data, Integrity flag, Differential Correction data, Integrity flag, IonosphericIonospheric correctioncorrection

Almanac & Health for other GNSS Almanac & Health for other GNSS SVsSVs

L1CL1C

L2CL2C 1227.6MHz1227.6MHz

L5L51176.45MHz1176.45MHz

L1L1‐‐SAIFSAIF** 1575.42MHz1575.42MHz Compatibility with GPSCompatibility with GPS‐‐SBASSBAS

LEXLEX

1278.75MHz1278.75MHz

Experimental Signal with higher data rate Experimental Signal with higher data rate message (2Kbps)message (2Kbps)

Compatibility & interoperability with Compatibility & interoperability with Galileo E6 signalGalileo E6 signal

* * L1L1‐‐SAIF: L1SAIF: L1‐‐SubmeterSubmeter‐‐class Augmentation with Integrity Functionclass Augmentation with Integrity Function


QZSS SignalsQZSS Signals



Time System and FrameTime System and FrameTime Reference System: QZSSTTime Reference System: QZSST

The length of one second is identical to The length of one second is identical to International Atomic Time International Atomic Time (TAI)(TAI)..Integer second offset for TAI is the same as GPS, and TAI is Integer second offset for TAI is the same as GPS, and TAI is 1199 secondssecondsahead of QZSST.ahead of QZSST.Interface with GPS: Interface with GPS:

The SV clocks of QZS and GPS satellites are both controlled withThe SV clocks of QZS and GPS satellites are both controlled with respect respect to the offset with the GPS time scale (GPST). to the offset with the GPS time scale (GPST). GQTO: The time scale offset with the GPS is less than GQTO: The time scale offset with the GPS is less than 2.0 [m] (95%)2.0 [m] (95%)..

Geodetic Reference Frame: JGSGeodetic Reference Frame: JGSThe QZSS coordinate system is known as the The QZSS coordinate system is known as the JJapan satellite navigation apan satellite navigation GGeodetic eodetic SSystem (ystem (JGSJGS). This coordinate System is operated so as to ). This coordinate System is operated so as to approach the approach the International Terrestrial Reference System (ITRS).International Terrestrial Reference System (ITRS).The coordinate system offset with GPS is less than The coordinate system offset with GPS is less than 0.02 [m].0.02 [m].



AccuracyAccuracyThe SignalThe Signal‐‐inin‐‐Space (SIS) User Range ErrorSpace (SIS) User Range Error

is less than 1.6 m (95%) without time and coordination offset eris less than 1.6 m (95%) without time and coordination offset error.ror.User Positioning AccuracyUser Positioning Accuracy

define as positioning accuracy combined GPS L1_C/A and QZSS L1_Cdefine as positioning accuracy combined GPS L1_C/A and QZSS L1_C/A for /A for single frequency user, L1single frequency user, L1‐‐L2 for dual frequency user.L2 for dual frequency user.

L1L1‐‐SAIF signal can provide WDGPS correction data, its positioning SAIF signal can provide WDGPS correction data, its positioning accuracy is 1m (1 sigma accuracy is 1m (1 sigma rmsrms) except in cases of large multipath error and ) except in cases of large multipath error and large large ionosphericionospheric disturbance. disturbance.

SpecificationSpecification Simulation resultSimulation result

SISSIS‐‐URE URE 1.6m (95%)1.6m (95%) 1.5m (95%)1.5m (95%)

Positioning AccuracyPositioning AccuracySingle frequency user Single frequency user

21.9m(95%)21.9m(95%) 7.02m(95%)7.02m(95%)

Positioning AccuracyPositioning AccuracyDual frequency userDual frequency user

7.5m (95%)7.5m (95%) 6.11m(95%)6.11m(95%)

QZSS System DescriptionQZSS System Description


MassMass Approx. 1,800kg (dry)Approx. 1,800kg (dry)(NAV Payload(NAV Payload：：Approx. 320kg)Approx. 320kg)

PowerPower Approx. 5.3 kW (EOL) Approx. 5.3 kW (EOL) (NAV Payload: Approx. 1.9kW)(NAV Payload: Approx. 1.9kW)

Design LifeDesign Life 10 years10 years

L-band Helical Array Antenna

L1-SAIF Antenna

Laser Reflector

C-band TTC Antenna

Radiation Cooled TWT

TWSTFT Antenna

25.3m


TimeComparison

Unit

Time TransferSystem

RF portion

ＲｂAtomic Clock

TimeKeeping

UnitSynthesi

zer

NavigationOperationComputer

Modulator Amplifier

JAXA

LaserLaserReflectorReflector

RbAtomic Clock

Sine Wave

Signal of Two Way Satellite Time and Frequency Transfer

Navigation Signal

TimeKeeping

UnitSynthe-

sizer

NavigationOnboardComputer

Modulator Amplifier MUX

TimeComparison

Unit

Time TransferSystem

RF portion

NICT

L-Ant

Uploaded Data(including Remote Synchronization

Signal (by AIST))

Baseband Signal (Navigation Message + PRN Code)

Control/ Phase Error

(previously: CRL)

TT&CTT&C

Subsystem

TLM

Navigation Message, CMD

Ku-Ant

L1L1‐‐SAIF ANTSAIF ANT

12

Okinawa is primary TT&C station for nominal operation. Okinawa is primary TT&C station for nominal operation. LEOP operation is to be conducted by using LEOP operation is to be conducted by using JAXAJAXA’’ssGround TT&C Network Ground TT&C Network

2010/10/26 IS GPS/GNSS 2010, Taipei, Taiwan

Development, LaunchDevelopment, Launch& Next Step& Next Step


DevelopmentDevelopment

the MCS and the TTC Stationthe MCS and the TTC StationMaster Control Station (MCS)

MCS is located in Tsukuba Space Center

Installation and integration test were completed

Tracking & Control StationBuilt new C‐band TT&C capability in Okinawa

Installation and integration test were completed TT&C-NAV Message Uplink Station

@Okinawa


DevelopmentDevelopment

the Monitor Stationsthe Monitor Stations9 sites distributed in Asia Oceania regionEstablished in collaboration with international partners

Guam;NOAA, National Weather Service Forecast Office (WFO)

Hawaii;NASA, Kokee Park Geophysical Observatory (KPGO)

Bangalore;Indian Space Research Organization (ISRO)

Canberra;Geosciences Australia (GA)

Bangkok;Asian Institute of Technology (AIT) Monitoring Station

@Guam (Aug 2009)


NAV Payload PFM TVT NAV Payload PFM TVT

(Jan 2009(Jan 2009））

PFM LPFM L--band Antenna Pattern Testband Antenna Pattern Test

(July 2008)(July 2008)


TVT TVT （（10/1/200910/1/2009--10/30/200910/30/2009））

IPTIPT（（8/20/20098/20/2009--9/3/20099/3/2009））Initial Alignment TestInitial Alignment Test

（（9/5/20099/5/2009--9/10/20099/10/2009））

Electrical Performance Test Electrical Performance Test （（11/21/200911/21/2009--11/22/200911/22/2009）） Sine Vibration TestSine Vibration Test

（（7/12/20097/12/2009--6/1/20106/1/2010））Separation Shock TestSeparation Shock Test（（1.13/20101.13/2010--1.14/20101.14/2010））

Ship to Launch siteShip to Launch site（（6/5/20106/5/2010））


……and the Launchand the LaunchSep.11 at 20:17

Lift‐Off ＠JAXA TNSC

Sep.11 at 20:45

Separation from H‐IIA


QZS-1

Launch and Next StepLaunch and Next Step

Launch and OOCLaunch and OOCLaunch:Launch:The 1The 1stst satellite (QZSsatellite (QZS‐‐1; MICHIBIKI) was launched on 1; MICHIBIKI) was launched on September 11th, 2010, JST.September 11th, 2010, JST.

OnOn‐‐OrbitOrbit‐‐Checkout: OOC:Checkout: OOC:3 months On3 months On‐‐OrbitOrbit‐‐Checkout (OOC) period after the launch;Checkout (OOC) period after the launch;

Orbit raising in the Orbit Transfer PeriodOrbit raising in the Orbit Transfer Period

Orbit settlement in the Orbit Drift PeriodOrbit settlement in the Orbit Drift Period

and the Initial Check Operations. and the Initial Check Operations.



Next Step: DemonstrationsNext Step: DemonstrationsDemonstrations will be started after OOCDemonstrations will be started after OOC

Technical Demonstration:Technical Demonstration:Various parameters are tunedVarious parameters are tuned

Ephemeris accuracy is to be improved.Ephemeris accuracy is to be improved.

And after the time when SIS URE isAnd after the time when SIS URE is verified to meet the verified to meet the specification, QZSspecification, QZS‐‐1 will be set healthy.1 will be set healthy.

Application Demonstration:Application Demonstration:101 companies will participate.101 companies will participate.

58 programs will be implemented. 58 programs will be implemented.

OrganizationOrganization


Strategic Headquarter for Space PolicyStrategic Headquarter for Space PolicyStrategic Headquarter for Space Policy

Ministry of Internal Affairs and Communications (MIC)

Ministry of Internal Affairs and Ministry of Internal Affairs and Communications (MIC)Communications (MIC)

Ministry of Education, Culture, Sports, Science and Technology

(MEXT)

Ministry of Education, Culture, Ministry of Education, Culture, Sports, Science andSports, Science and Technology Technology

(MEXT)(MEXT)

Ministry of Land, Infrastructure,Transport and Tourism (MLIT)

Ministry of Land, InfrastructureMinistry of Land, Infrastructure,,Transport and Tourism (MLIT)Transport and Tourism (MLIT)

Ministry of Economy, Trade and Industry (METI)

Ministry of Economy, Trade and Ministry of Economy, Trade and Industry (METI)Industry (METI)

Ministry of Foreign affairs (MOFA)Ministry of Foreign affairs (MOFA)Ministry of Foreign affairs (MOFA) Satellite Positioning Research and Application Center (SPAC)

Satellite Positioning Research and Satellite Positioning Research and Application Center (Application Center (SPACSPAC))

National Institute of Information and Communications Technology (NICT)

National Institute of Information and National Institute of Information and CommunicationsCommunications Technology (NICT)Technology (NICT)

Japan Aerospace Exploration Agency (JAXA)

Japan Aerospace Exploration Japan Aerospace Exploration Agency (JAXA)Agency (JAXA)

Geospatial Information Authority of Japan (GSI)

Geospatial Information Authority of Geospatial Information Authority of JapanJapan (GSI)(GSI)

National Institute of Advanced Industrial Science and Technology

(AIST)

National Institute of Advanced National Institute of Advanced Industrial Science and Technology Industrial Science and Technology

(AIST)(AIST)

Electronic Navigation Research Institute (ENRI)

Electronic Navigation Research Electronic Navigation Research Institute (ENRI)Institute (ENRI)

Organization ofOrganization of

QZSS Development & UtilizationQZSS Development & Utilization

MinistryMinistry Agency / InstituteAgency / Institute

CabinetCabinet

Service Provided and Service Provided and Provision PoliciesProvision Policies


GPS interoperable signals, GPS interoperable signals, L1 C/A, L2C, L5 L1 C/A, L2C, L5 and L1Cand L1C, are to be provided on the basis , are to be provided on the basis of of no direct user feeno direct user fee..

GPS performance enhancement signals, GPS performance enhancement signals,

L1L1‐‐SAIF and LEX, charging policy is under SAIF and LEX, charging policy is under examination. examination.

QZSS Service Provision PoliciesQZSS Service Provision Policies



Views on InteroperabilityViews on InteroperabilityInteroperability is NOT mandatory, but highly Interoperability is NOT mandatory, but highly desirable in the usersdesirable in the users’’ point of view. point of view.

Japan will continue to keep the interoperability Japan will continue to keep the interoperability at the higher level for all user communities at the higher level for all user communities including lowincluding low‐‐cost receiverscost receivers

L1 and L5 with GPS, Galileo, COMPASS, as well as future L1 and L5 with GPS, Galileo, COMPASS, as well as future GLONASS CDMA signalsGLONASS CDMA signals

L2C with GPS L2C with GPS

LEX with GalileoLEX with Galileo



Views on CompatibilityViews on CompatibilityCompatibility is a mandatory requirement to Compatibility is a mandatory requirement to share the same frequency bands among multi share the same frequency bands among multi GNSS systems without harmful interference GNSS systems without harmful interference

Japan will continue to comply with the Japan will continue to comply with the international rule and consensus.international rule and consensus.

ITU Radio RegulationITU Radio Regulation

ICG definition ICG definition


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2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

GAGAN

MSASS

EGNOSS

WAAS

QZSS

IRNSS

COMPASS

Galileo

GLONASS

GPS

We will have over 100 GNSS satellites in this decade.We will have over 100 GNSS satellites in this decade.



New Applications are ExpectedNew Applications are ExpectedUser benefits from Multi GNSS

Increase in usable SVs, signals and frequencies

Increase in availability and coverage

More robust and reliable services

Higher accuracy in bad conditions

Less expensive high‐end services

Emerging new and expanding existing applications are to Emerging new and expanding existing applications are to be expected.be expected.



Asia Oceania ShowcaseAsia Oceania Showcase

MultiMulti‐‐GNSSGNSSMore Stars, SignalsMore Stars, Signals

MultiMulti‐‐FrequencyFrequency

Asian People can use Asian People can use multimulti‐‐GNSS signals GNSS signals earlier than other earlier than other region in the worldregion in the world

Higher accuracyHigher accuracyMore reliable, robustnessMore reliable, robustnessWider coverageWider coverage

New New ApplicationsApplications



Demonstration CampaignDemonstration Campaignhttp://http://www.multignss.asiawww.multignss.asia//

is a series of activities for five years from 2010is a series of activities for five years from 2010comprises the following partscomprises the following parts

1.1. MultiMulti‐‐GNSS Monitoring NetworkGNSS Monitoring NetworkCORSCORS (Continuously Operating Reference System)(Continuously Operating Reference System), Data center, , Data center, Analysis CenterAnalysis CenterSharing resources and observed data among participated Sharing resources and observed data among participated organizationorganization

2.2. Applications Development & DemonstrationApplications Development & DemonstrationDevelopment of multi GNSS applicationsDevelopment of multi GNSS applicationsCarrying out Experiments and Demonstrations Carrying out Experiments and Demonstrations

3.3. Regional Work ShopRegional Work ShopAnnual base Workshop in Asia Oceania regionAnnual base Workshop in Asia Oceania regionAnnouncement of joint experiment plans and reporting results of Announcement of joint experiment plans and reporting results of the experimentsthe experiments


http://http://www.multignss.asiawww.multignss.asia//

Application Application DemonstrationDemonstration

Disaster MitigationDisaster Mitigation

Precise PositioningPrecise Positioning

ITS, Mapping, LBSITS, Mapping, LBS

Regional WorkshopRegional Workshop

11stst Asia Oceania Regional Workshop Asia Oceania Regional Workshop on GNSS, 25,26 JAN, 2010, Bangkokon GNSS, 25,26 JAN, 2010, Bangkok

Other, Other, ionosphericionosphericobservation etcobservation etc

195 Participants, 18 Countries, 95 195 Participants, 18 Countries, 95 OrganizationsOrganizationsNext is 21,22 Nov. 2010 @ Next is 21,22 Nov. 2010 @ Melbourne, AustraliaMelbourne, Australia

Monitoring NetworkMonitoring Network

Multi‐GNSS Demonstration Campaign

Planned Applications


*SPAC: Satellite Positioning Applications Center *SPAC: Satellite Positioning Applications Center ** GISTDA: Geo** GISTDA: Geo‐‐Informatics and Space Technology AgencyInformatics and Space Technology Agency

MultiMulti‐‐GNSS Demonstration CampaignGNSS Demonstration Campaign

the Status (past)the Status (past)The concept of The concept of ““MultiMulti‐‐GNSS demo. CampaignGNSS demo. Campaign”” was presented at ICGwas presented at ICG‐‐4 and 4 and obtained endorsements from Two obtained endorsements from Two WGsWGs (WG(WG‐‐A and D) A and D) The 1The 1stst regional Workshop was held at Bangkok, Thailand on January 25regional Workshop was held at Bangkok, Thailand on January 25‐‐26, 26, 2010 successfully.2010 successfully.

Hosted by SPAC*, JAXA, and GISTDA** of Thailand and supported byHosted by SPAC*, JAXA, and GISTDA** of Thailand and supported by UN UN International Committee on GNSS (ICG) International Committee on GNSS (ICG)

195 participants from 18 countries195 participants from 18 countries4 discussion groups were established for future joint experiment4 discussion groups were established for future joint experimentss

1.1.MultiMulti‐‐GNSS monitoring networkGNSS monitoring network2.2.Disaster Mitigation and ManagementDisaster Mitigation and Management3.3.Precise PositioningPrecise Positioning4.4.ITSITS



MultiMulti‐‐GNSS Demonstration CampaignGNSS Demonstration Campaign

the Status (future)the Status (future)JAXA started a procurement for multiJAXA started a procurement for multi‐‐GNSS GNSS receivers for the multireceivers for the multi‐‐GNSS monitoring GNSS monitoring network.network.The 2The 2ndnd Workshop is to be held in Melbourne, Workshop is to be held in Melbourne, Australia on November 21Australia on November 21‐‐22, 2010. 22, 2010.

To discuss future joint demonstration projectsTo discuss future joint demonstration projectsMultiMulti‐‐GNSS Monitoring NWGNSS Monitoring NWDisaster MitigationDisaster MitigationPrecise PositioningPrecise PositioningIntelligent Transportation Intelligent Transportation System (ITS)System (ITS)Mapping, Location Based SystemMapping, Location Based System



SummarySummaryQZSS is a regional spaceQZSS is a regional space‐‐based PNT system covers East Asia based PNT system covers East Asia and Oceania region and transmits six civil PNT signals.and Oceania region and transmits six civil PNT signals.

First satellite (QZSFirst satellite (QZS‐‐1; MICHIBIKI) was launched on September 1; MICHIBIKI) was launched on September 11th, 2010, JST.11th, 2010, JST.

We are performing 3We are performing 3‐‐monthmonth‐‐OnOn‐‐OrbitOrbit‐‐Checkout (OOC) after Checkout (OOC) after the launch. Technical and application demonstrations will be the launch. Technical and application demonstrations will be started after OOC. started after OOC.

Asia Oceania is the Showcase of New Multi GNSS EraAsia Oceania is the Showcase of New Multi GNSS EraNext workshop will be held in 21, 22 Nov 2010 in Melbourne, AustNext workshop will be held in 21, 22 Nov 2010 in Melbourne, Australiaralia


Thank you for your attentionThank you for your attention

Our Planet from QZSOur Planet from QZS‐‐11

Backup SheetsBackup Sheets

Political Back groundPolitical Back ground



Back Ground Act;Back Ground Act; GeoGeo‐‐Spatial InformationSpatial InformationBasic Act on Promotion of Utilization of Geographical InformatioBasic Act on Promotion of Utilization of Geographical Informationn(AUGI)(AUGI)

August 2007, Basic Act on AUGI entered into forceAugust 2007, Basic Act on AUGI entered into forceApril 2008, Basic Plan for AUGI was approved by the Cabinet (basApril 2008, Basic Plan for AUGI was approved by the Cabinet (based ed on Article 9 of the Basic Act on AUGI) on Article 9 of the Basic Act on AUGI)

QZSS is a key element and implemented by phased approachQZSS is a key element and implemented by phased approach;;Phase 1 : First satellite launch and technology and application Phase 1 : First satellite launch and technology and application demonstrationdemonstrationPhase 2 : 2nd and 3rd satellite will be launched after assessmenPhase 2 : 2nd and 3rd satellite will be launched after assessment of the t of the result of phase 1result of phase 1

PublicPublic‐‐PrivatePrivate‐‐Partnership for Promoting UtilizationPartnership for Promoting UtilizationQZSS project is based on the collaboration between private sectoQZSS project is based on the collaboration between private sector and r and governmentgovernment


Organization ofOrganization of

11stst satellitesatellite DevelopmentDevelopmentJAXA (MEXT):JAXA (MEXT): Development of satellite navigation technologies, integration of QZSS navigation system, and development of the first QZSS satellite and satellite control & tracking ground station.

NICT (MIC):NICT (MIC): Development of timing control technologies.

ENRI (MLIT):ENRI (MLIT): Development of submeter class GPS Augmentation technologies with L1‐SAIF(Submeter‐class Augmentation with Integrity Function) signal.

GSI (MLIT):GSI (MLIT): Development of centimeter or decimeter class GPS Augmentation technologies.

AIST (METI):AIST (METI): Development of precise onboard clock timing control technology.



Back Ground Act;Back Ground Act; SpaceSpaceAerospace Basic ActAerospace Basic Act

May 2008, Aerospace Basic Act was enactedMay 2008, Aerospace Basic Act was enactedJune 2009, Basic Plan for Space Policy was decided by the June 2009, Basic Plan for Space Policy was decided by the Strategic Headquarters for Space Policy Strategic Headquarters for Space Policy

(chaired by the Prime Minister, based on Article 25 of the Aeros(chaired by the Prime Minister, based on Article 25 of the Aerospace Basic Act) pace Basic Act)

6 pillars for space activity6 pillars for space activity（（high QOL, security, diplomacy, advanced R&D, industry and envirohigh QOL, security, diplomacy, advanced R&D, industry and environment)nment)

SpaceSpace‐‐based PNT in the Basic Plan for Space Policybased PNT in the Basic Plan for Space PolicyPromote highly accurate system such as QZSS and MSASPromote highly accurate system such as QZSS and MSASCreate new services in our daily life such as personal Create new services in our daily life such as personal navigation systems, with private sectornavigation systems, with private sector



Next Step: 2Next Step: 2ndnd StepStepOn 27/AUG,On 27/AUG, Strategic Headquarter for Space PolicyStrategic Headquarter for Space Policy of the cabinet has of the cabinet has released their decision on released their decision on ““the near term promotion of space policythe near term promotion of space policy””..

In the decision, the related Ministries have to In the decision, the related Ministries have to derive the solution to the 2derive the solution to the 2ndnd

step of QZSS togetherstep of QZSS together under the coordination of the cabinet secretary by the under the coordination of the cabinet secretary by the early in the next FY2011.early in the next FY2011.

The The QZSS Project Team composedQZSS Project Team composed of the Parliamentary Secretaryof the Parliamentary Secretary of the of the main 8 Ministries was established.main 8 Ministries was established.

And on 7/SEP, And on 7/SEP, the PT has started the studythe PT has started the study how to step into the 2how to step into the 2ndnd step: the step: the 22ndnd and 3and 3rdrd satellites.satellites.

On 16/SEP, the Strategic Headquarter released the documents whicOn 16/SEP, the Strategic Headquarter released the documents which h relates relates the evidence of the FY2011 budget requirement for the 2the evidence of the FY2011 budget requirement for the 2ndnd QZSSQZSSstudy.study.

Until the end of OCT, the Until the end of OCT, the GNSS Expert Working Group will be also GNSS Expert Working Group will be also establishedestablished under the committee of the Strategic Headquarter.under the committee of the Strategic Headquarter.

QZSS ConnectionQZSS Connection‐‐ Dissemination of the achievement Dissemination of the achievement


PP RR UU

http://qzhttp://qz‐‐vision.jaxa.jpvision.jaxa.jp//


SS

HH RRPP UU



RRPPHH UU



HH



PP RRHH

Interface DocumentInterface Document

AlmanacAlmanac

EphemerisEphemeris

Precise ProductsPrecise Products

QZ radarQZ radar


Orbit deOrbit de‐‐confliction with GSO confliction with GSO and reand re‐‐orbit procedureorbit procedure


Each satellite orbit has slight eccentricity so Each satellite orbit has slight eccentricity so that can keep appropriate separation away that can keep appropriate separation away from GSO. The vector of eccentricity will be from GSO. The vector of eccentricity will be maintained this appropriate separation more maintained this appropriate separation more than 50 km during operation.than 50 km during operation.After whole mission life, the satellite will be After whole mission life, the satellite will be injected into injected into ““Disposal OrbitDisposal Orbit””, which defined , which defined as the orbit with 1000 km higher perigee as the orbit with 1000 km higher perigee altitude from altitude from GSOGSO’’ss..

Avoidance of physical interference to GSO & reAvoidance of physical interference to GSO & re‐‐

orbit after operationorbit after operation

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